code: def unpickle_traceback(tb_frame, tb_lineno, tb_next):
      ret = object.__new__(Traceback)
      ret.tb_frame = tb_frame
      ret.tb_lineno = tb_lineno
      ret.tb_next = tb_next
      return ret.as_traceback()
  
file_path: mars/mars/lib/tblib/pickling_support.py
imports: import sys
  from types import TracebackType
  from .None import Frame
  from .None import Traceback
label_desc: Use image node_id 1 for calling a global function with example usage: unpickle_traceback(tb_frame, tb_lineno, tb_next) and returns: ret